<template>
    <div>
        <div style="margin: 10px 0">
            <el-input style="width: 200px" placeholder="请输入名称" suffix-icon="el-icon-search"
                      v-model="name"></el-input>
            <!--      <el-input style="width: 200px" placeholder="请输入邮箱" suffix-icon="el-icon-message" class="ml-5" v-model="email"></el-input>-->
            <!--      <el-input style="width: 200px" placeholder="请输入地址" suffix-icon="el-icon-position" class="ml-5" v-model="address"></el-input>-->
            <el-button class="ml-5" type="primary" @click="load">搜索</el-button>
            <el-button type="warning" @click="reset">重置</el-button>
        </div>
        
        <div style="margin: 10px 0">
            <el-button type="primary" @click="handleAdd">新增 <i class="el-icon-circle-plus-outline"></i></el-button>
            <el-popconfirm
                class="ml-5"
                confirm-button-text='确定'
                cancel-button-text='我再想想'
                icon="el-icon-info"
                icon-color="red"
                title="您确定批量删除这些数据吗？"
                @confirm="delBatch"
            >
                <el-button type="danger" slot="reference">批量删除 <i class="el-icon-remove-outline"></i></el-button>
            </el-popconfirm>
            <!--      <el-upload action="http://localhost:9090/user/import" :show-file-list="false" accept="xlsx" :on-success="handleExcelImportSuccess" style="display: inline-block">-->
            <!--        <el-button type="primary" class="ml-5">导入 <i class="el-icon-bottom"></i></el-button>-->
            <!--      </el-upload>-->
            <!--      <el-button type="primary" @click="exp" class="ml-5">导出 <i class="el-icon-top"></i></el-button>-->
        </div>
        
        <el-table :data="tableData" border stripe :header-cell-class-name="'headerBg'"
                  @selection-change="handleSelectionChange">
            <el-table-column type="selection" width="55"></el-table-column>
            <el-table-column prop="id" label="ID" width="80"></el-table-column>
            <el-table-column prop="name" label="名称"></el-table-column>
            <el-table-column prop="flag" label="唯一标识"></el-table-column>
            <el-table-column prop="description" label="描述"></el-table-column>
            <el-table-column label="操作" width="280" align="center">
                <template slot-scope="scope">
                    <el-button type="info" @click="selectMenu(scope.row)">分配菜单 <i class="el-icon-menu"></i>
                    </el-button>
                    <el-button type="success" @click="handleEdit(scope.row)">编辑 <i class="el-icon-edit"></i>
                    </el-button>
                    <el-popconfirm
                        class="ml-5"
                        confirm-button-text='确定'
                        cancel-button-text='我再想想'
                        icon="el-icon-info"
                        icon-color="red"
                        title="您确定删除吗？"
                        @confirm="del(scope.row.id)"
                    >
                        <el-button type="danger" slot="reference">删除 <i class="el-icon-remove-outline"></i>
                        </el-button>
                    </el-popconfirm>
                </template>
            </el-table-column>
        </el-table>
        <div style="padding: 10px 0">
            <el-pagination
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
                :current-page="pageNum"
                :page-sizes="[2, 5, 10, 20]"
                :page-size="pageSize"
                layout="total, sizes, prev, pager, next, jumper"
                :total="total">
            </el-pagination>
        </div>
        
        <!--新增、编辑角色-->
        <el-dialog title="角色信息" :visible.sync="dialogFormVisible" width="30%">
            <el-form label-width="80px" status-icon size="small" :model="form" :rules="rules" ref="form">
                <el-form-item label="名称" prop="name">
                    <el-input v-model="form.name" autocomplete="off"></el-input>
                </el-form-item>
                <el-form-item label="唯一标识" prop="flag">
                    <el-input v-model="form.flag" autocomplete="off"></el-input>
                </el-form-item>
                <el-form-item label="描述">
                    <el-input v-model="form.description" autocomplete="off"></el-input>
                </el-form-item>
            </el-form>
            <div slot="footer" class="dialog-footer">
                <el-button @click="dialogFormVisible = false">取 消</el-button>
                <el-button type="primary" @click="save('form')">确 定</el-button>
            </div>
        </el-dialog>
        
        <el-dialog title="菜单分配" :visible.sync="menuDialogVis" width="30%">
            <el-tree
                :props="props"
                :data="menuData"
                show-checkbox
                node-key="id"
                ref="tree"
                :default-expanded-keys="expends"
                :default-checked-keys="checks">
         <span class="custom-tree-node" slot-scope="{ node, data }">
            <span><i :class="data.icon"></i> {{ data.name }}</span>
         </span>
            </el-tree>
            <div slot="footer" class="dialog-footer">
                <el-button @click="menuDialogVis = false">取 消</el-button>
                <el-button type="primary" @click="saveRoleMenu">确 定</el-button>
            </div>
        </el-dialog>
    </div>
</template>

<script>
export default {
    name: "Role",
    data() {
        return {
            tableData: [],
            total: 0,
            pageNum: 1,
            pageSize: 10,
            name: "",
            form: {},
            dialogFormVisible: false,
            menuDialogVis: false,
            multipleSelection: [],
            menuData: [],
            props: {
                label: 'name',
            },
            expends: [],
            checks: [],
            roleId: 0,
            roleFlag: '',
            ids: [],
            rules: {
                name: [
                    {required: true, message: '请输入角色名称', trigger: 'blur'},
                    {min: 2, max: 5, message: '长度在 2 到 5 个字符', trigger: 'blur'}
                ],
                flag: [
                    {required: true, message: '请输入唯一标识', trigger: 'blur'},
                    {min: 1, max: 5, message: '长度在 1 到 5 个字符', trigger: 'blur'}
                ]
            },
        }
    },
    created() {
        this.load()
    },
    methods: {
        load() {
            this.request.get("/role/page", {
                params: {
                    pageNum: this.pageNum,
                    pageSize: this.pageSize,
                    name: this.name,
                }
            }).then(res => {
                this.tableData = res.data.records
                this.total = res.data.total
            })
            
            this.request.get("/menu/ids").then(r => {
                this.ids = r.data
            })
            
        },
        save(formName) {
            this.$refs[formName].validate((valid) => {
                if (valid) {
                    this.request.post("/role", this.form).then(res => {
                        if (res.code === '200') {
                            this.$message.success("保存成功")
                            this.dialogFormVisible = false
                            this.load()
                        } else {
                            this.$message.error("保存失败")
                        }
                    })
                } else {
                    this.$message.error("请按要求输入");
                    return false;
                }
            });

        },
        saveRoleMenu() {
            this.request.post("/role/roleMenu/" + this.roleId, this.$refs.tree.getCheckedKeys()).then(res => {
                if (res.code === '200') {
                    this.$message.success("绑定成功")
                    this.menuDialogVis = false
                    
                    // 操作管理员角色后需要重新登录
                    if (this.roleFlag === 'ROLE_ADMIN') {
                        this.$store.commit("logout")
                    }
                    
                } else {
                    this.$message.error(res.msg)
                }
            })
        },
        handleAdd() {
            this.dialogFormVisible = true
            this.form = {}
        },
        handleEdit(row) {
            this.form = JSON.parse(JSON.stringify(row))
            this.dialogFormVisible = true
        },
        del(id) {
            this.request.delete("/role/" + id).then(res => {
                if (res.code === '200') {
                    this.$message.success("删除成功")
                    this.load()
                } else {
                    this.$message.error("删除失败")
                }
            })
        },
        handleSelectionChange(val) {
            console.log(val)
            this.multipleSelection = val
        },
        delBatch() {
            let ids = this.multipleSelection.map(v => v.id)  // [{}, {}, {}] => [1,2,3]
            this.request.post("/role/del/batch", ids).then(res => {
                if (res.code === '200') {
                    this.$message.success("批量删除成功")
                    this.load()
                } else {
                    this.$message.error("批量删除失败")
                }
            })
        },
        reset() {
            this.name = ""
            this.load()
        },
        handleSizeChange(pageSize) {
            console.log(pageSize)
            this.pageSize = pageSize
            this.load()
        },
        handleCurrentChange(pageNum) {
            console.log(pageNum)
            this.pageNum = pageNum
            this.load()
        },
        async selectMenu(role) {
            this.roleId = role.id
            this.roleFlag = role.flag
            
            // 请求菜单数据
            this.request.get("/menu").then(res => {
                this.menuData = res.data
                
                // 把后台返回的菜单数据处理成 id数组
                this.expends = this.menuData.map(v => v.id)
            })
            
            this.request.get("/role/roleMenu/" + this.roleId).then(res => {
                this.checks = res.data
                this.ids.forEach(id => {
                    if (!this.checks.includes(id)) {
                        this.$nextTick(() => {
                            this.$refs.tree.setChecked(id, false)
                        })
                    }
                })
                this.menuDialogVis = true
            })
        },
    }
}
</script>


<style>
.headerBg {
    background: #eee !important;
}
</style>
